CN112679786A - Alumina fiber cotton foaming grinding wheel and preparation method thereof - Google Patents
Alumina fiber cotton foaming grinding wheel and preparation method thereof Download PDFInfo
- Publication number
- CN112679786A CN112679786A CN202011523927.5A CN202011523927A CN112679786A CN 112679786 A CN112679786 A CN 112679786A CN 202011523927 A CN202011523927 A CN 202011523927A CN 112679786 A CN112679786 A CN 112679786A
- Authority
- CN
- China
- Prior art keywords
- grinding wheel
- foaming
- fiber cotton
- alumina fiber
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an alumina fiber cotton foaming grinding wheel and a preparation method thereof, wherein the alumina fiber cotton foaming grinding wheel comprises the following steps: mixing and uniformly stirring polyol, reinforcing resin, water, a catalyst, a filler and an auxiliary agent, and adding the mixture into a charging basket A of a foaming machine; adding polyisocyanate into a material barrel B of a foaming machine; cutting the alumina fiber cotton into a plurality of strips, splicing the strips into a grinding wheel shape, putting the grinding wheel shape into a foaming mold, spraying sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mold for vacuuming and injecting glue, and foaming and forming to obtain the alumina fiber cotton foaming grinding wheel. The method adopts the alumina fiber cotton to directly foam and form, no grinding material is added, the fiber strength is high, the fracture is avoided, the process is simple, the VOC gas is avoided, the prepared alumina fiber cotton foaming grinding wheel has strong deburring capability, no scrap falling, no hole plugging and good polishing effect.
Description
Technical Field
The invention relates to the technical field of grinding wheels, in particular to an alumina fiber cotton foaming grinding wheel and a preparation method thereof.
Background
At present, with the development of the internet of things, the demand of the PCB is more and more large, and the requirements and standards for the production and processing of the PCB are also improved. As is known, in the manufacturing process of printed circuit boards, several surface treatment processes, such as green oil pretreatment, outer dry film pretreatment, deburring and hole plugging removal, are generally performed, and a grinding wheel is generally used to perform two processes, namely green oil pretreatment and outer dry film pretreatment. At present, the grinding wheel of domestic production generally all needs to add the abrasive material to come the shaping, like the non-woven fabrics grinding wheel, generally adopts nylon or non-woven fabrics to add the abrasive material and makes the substrate, and its production technology is complicated and can produce VOC gas, especially its raw materials intensity is poor easy fracture, falls the bits easily, very easily causes the consent to block up.
Therefore, it is necessary to develop an alumina fiber cotton foamed grinding wheel and a method for preparing the same to solve the above technical disadvantages.
Disclosure of Invention
The invention aims to provide a preparation method of an alumina fiber cotton foaming grinding wheel, the process adopts alumina fiber cotton to directly foam and form, no grinding material is added, the fiber strength is high, the fracture is avoided, the process is simple, VOC gas is not generated, the prepared alumina fiber cotton foaming grinding wheel has strong deburring capability, no chip drop and no hole plugging, and the polishing effect is good.
The invention also aims to provide an alumina fiber cotton foaming grinding wheel, which is prepared by adopting the preparation method of the alumina fiber cotton foaming grinding wheel.
In order to realize the purpose, the invention discloses a preparation method of an alumina fiber cotton foaming grinding wheel, which comprises the following steps:
mixing and uniformly stirring 50-70 parts of polyol, 3-10 parts of reinforcing resin, 0.4-1.5 parts of water, 0.1-0.5 part of catalyst, 3-7 parts of filler and 0.1-2 parts of auxiliary agent to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
adding 30-50 parts of polyisocyanate into a material barrel B of a foaming machine;
cutting the alumina fiber cotton into a plurality of strips, splicing the strips into a grinding wheel shape, putting the grinding wheel shape into a foaming mold, spraying sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mold for vacuuming and injecting glue, placing the foaming mold at normal temperature for foaming and forming to obtain the alumina fiber cotton foaming grinding wheel.
Correspondingly, the alumina fiber cotton foamed grinding wheel is also provided, and is prepared by the preparation method of the alumina fiber cotton foamed grinding wheel.
Compared with the prior art, in the preparation method of the alumina fiber cotton foaming grinding wheel, the alumina fiber cotton is cut into strips, the strips are spliced into the shape of the grinding wheel and then placed in the foaming mold, then the alumina fiber cotton foaming grinding wheel is prepared through foaming molding, any abrasive material does not need to be added, the fiber strength is high, the breaking is avoided, the process is simple, the VOC gas is not generated, and meanwhile, the strength of the alumina fiber is improved by means of the effect of the reinforcing resin on the alumina fiber. Therefore, the alumina fiber cotton foaming grinding wheel prepared by the method has strong deburring capability, does not fall chips or plug holes, and has good polishing effect.
Drawings
Fig. 1 is a schematic perspective view of a foaming mold according to the present invention.
Fig. 2 is a side view of the foaming mold shown in fig. 1.
Fig. 3 is an exploded view of a locking device in the foaming mold shown in fig. 1.
Fig. 4 is a cross-sectional view at a-a in fig. 2.
Description of the symbols:
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a preparation method of an alumina fiber cotton foaming grinding wheel, which comprises the following steps:
mixing and uniformly stirring 50-70 parts of polyol, 3-10 parts of reinforcing resin, 0.4-1.5 parts of water, 0.1-0.5 part of catalyst, 3-7 parts of filler and 0.1-2 parts of auxiliary agent to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
adding 30-50 parts of polyisocyanate into a material barrel B of a foaming machine;
cutting the alumina fiber cotton into a plurality of strips, splicing the strips into a grinding wheel shape, putting the grinding wheel shape into a foaming mold, spraying sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mold for vacuuming and injecting glue, placing the foaming mold at normal temperature for foaming and forming to obtain the alumina fiber cotton foaming grinding wheel.
Preferably, the alumina fiber cotton is cut into strips with the length of 600-800mm and the width of 10-16 mm.
Preferably, the polyol is at least one selected from the group consisting of polyether polyol, polyester polyol and polyolefin polyol having a viscosity of 3000cps or less at 25 ℃. For example, the polyolefin polyol has a viscosity of 1500cps to 2000cps at 25 deg.C, and the polyether polyol has a viscosity of 1800cps to 3000cps at 25 deg.C.
Preferably, the reinforcing resin is at least one selected from the group consisting of phenol resin, epoxy resin and polyamide resin having a viscosity of 20000cps or less at 25 ℃. For example, the epoxy resin has a viscosity of 8000cps to 12000cps at 25 deg.C, and the phenolic resin has a viscosity of 5000cps to 7000cps at 25 deg.C.
Preferably, the catalyst is at least one selected from tertiary amines, organic metal salts and organic phosphorus.
Preferably, the particle size D50 of the filler is 2-40 μm.
Preferably, the filler is at least one selected from talc, calcium carbonate, calcium oxide and titanium dioxide.
Preferably, the auxiliary agent is at least one selected from silicone surfactants, cationic surfactants, nonionic surfactants and pigments.
Preferably, the polyisocyanate is at least one selected from aromatic polyisocyanates, aliphatic polyisocyanates, and alicyclic polyisocyanates having a viscosity of 3000cps or less at 25 ℃. Such as a viscosity of 1600cps to 2500cps at 25 ℃.
Preferably, the alumina fiber cotton contains 70% -95% of alumina.
Preferably, the diameter of the fiber in the alumina fiber cotton is 3-7 μm.
For facilitating the foaming and better combining the foaming layer and the alumina fiber cotton, the foaming mold of the present application is performed in a vertical foaming manner, please refer to fig. 1-2, the foaming mold 100 includes a tubular structure 10 and a locking device 30, the tubular structure 10 is a hollow structure and has an inlet 11 and an outlet 12, the tubular structure 10 includes a first portion 13, a second portion 14 and a third portion 15, the second portion 14 has a first end and a second end, the first end of the second portion 14 is communicated with the first portion 13, the second end of the second portion 14 is communicated with the third portion 15, the inlet 11 is disposed in the first portion 13, the outlet 12 is disposed in the third portion 15, the first portion 13 has a gap 16 along a side wall, and the gap 16 has a closed state and an open state. Locking device 30 locks slot 16 in the closed position and locking device 30 unlocks slot 16 in the open position.
With continued reference to fig. 1-2, the second portion 14 has a gradually decreasing diameter along the direction from the first end to the second end. I.e. the first section 13 and the third section 15 are connected by means of the second section 14, the first end pipe diameter of the second section 14 being larger than the second end pipe diameter, so that the pipe diameter of the third section 15 is smaller than the pipe diameter of the first section 13. Further, the third portion 15 is provided with a ball valve (not shown) for controlling the air flow path. It will be appreciated that the outlet 12 of the third portion 15 communicates with a vacuum providing means for providing suction, which may be, but is not limited to, a negative pressure device and a vacuum pump. Further, the third portion 15 includes a vertical portion 151 and a horizontal portion 153 extending along the vertical portion 151 in a bent manner, and the vertical portion 151 and the horizontal portion 153 are connected by a hose 152.
Referring to fig. 3, the locking device 30 includes a locking member 31 and a fixing pin 33, the locking member 31 is annular and has an opening 32, one side of the opening 32 has a first locking hole 34, the other side of the opening 32 has a second locking hole 35, and the fixing pin 33 passes through the first locking hole 34 and the second locking hole 35 and can lock and unlock the two. That is, the locking member 31 is inserted into the first portion 13 with the slit 16, and then the fixing pin 33 passes through the first locking hole 34 and the second locking hole 35 to lock and unlock the first portion 13, so that a better operable space is provided for the first portion 13 after unlocking, the grinding wheel shaped as the grinding wheel can be conveniently placed in the first portion 13, the sealing performance of the first portion 13 is improved after locking, the glue is prevented from being exposed, and the grinding wheel can be stably fixed in the first portion 13. Specifically, if the fixing pin 33 rotates clockwise, the first locking hole 34 and the second locking hole 35 are locked, that is, the opening 32 is closed, and if the fixing pin 33 rotates counterclockwise, the first locking hole 34 and the second locking hole 35 are unlocked, that is, the opening 32 is opened, but not limited thereto. Meanwhile, a plurality of sets of locking devices 30 can be arranged according to the length of the gap 16 on the first portion 13 for better fixation. Preferably, the second silica gel layer 25 is arranged on the edge of the tube wall at the two sides of the gap 16, so that when the gap 16 is in a closed state, the sealing performance is better, and glue leakage is avoided.
Referring to fig. 4, the tubular structure 10 includes a housing 21 and a first silicone layer 23 located on an inner wall of the housing 21. The shell 21 is used as a support, and the arrangement of the first silica gel layer 23 can prevent the foaming glue from being adhered to the inner wall, so that the cleaning is easier. Specifically, the housing 21 may be, but is not limited to, PVC. Preferably, the thickness of the first silicone gel layer 23 is 4-6 mm.
The working principle of the foaming mold 100 of the present application is explained in detail below with reference to fig. 1 to 4:
the lock 31 is unlocked by the fixing pin 33 through the first and second lock holes 34 and 35 to open the opening 32 so that the gap 16 is in an open state, then the grinding wheel shaped into the grinding wheel is put into the first portion 13, and the lock 31 is locked by the fixing pin 33 through the first and second lock holes 34 and 35 to close the opening 32 so that the gap 16 is in a closed state. Starting a vacuum supply device communicated with the third part 15 and opening a ball valve, then spraying the sizing materials in the material barrel A and the material barrel B of the foaming machine into the first part 13 at the same time, and completing foaming under the suction force of the vacuum supply device. Because first portion 13 is vertical direction, and has vacuum appeal, can effectively get rid of the air in the alumina fiber cotton, can let the sizing material more fully fill in the gap of alumina fiber cotton, the foaming is filled more thoroughly, and foaming efficiency is high, and is of high quality, and the alumina fiber cotton foaming grinding wheel burring ability that obtains is stronger, and polishing effect is better.
The following examples are provided to illustrate the preparation of the alumina fiber cotton foamed grinding wheel of the present application, but not limited thereto.
Example 1
The preparation method of the alumina fiber cotton foaming grinding wheel comprises the following steps:
1) mixing and uniformly stirring 50 parts of polyether polyol (Wanhua chemical P3000), 7 parts of phenolic resin (Kunzhi chemical KT-7473), 0.5 part of water, 0.2 part of tertiary amine catalyst (Cangzhou aloe imidazole), 4 parts of calcium carbonate and 0.5 part of silicone surfactant (BYK-330) to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
2) adding 40 parts of isophorone diisocyanate into a charging basket of a foaming machine B;
3) cutting the alumina fiber cotton into strips with the length of 600mm and the width of 12 mm;
4) splicing the strips into the shape of the grinding wheel, putting the grinding wheel into a foaming mould, simultaneously spraying the sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mould for vacuumizing and glue injection, and placing the grinding wheel at normal temperature for foaming and forming to obtain the alumina fiber cotton foaming grinding wheel.
Examples 2 to 4
Example 2 is substantially the same as example 1 except that 10 parts of a phenol resin is used as a reinforcing resin in this example, and 7 parts of a phenol resin is used as a reinforcing resin in example 1, and the rest is the same as example 1 and will not be specifically described.
Example 3 is substantially the same as example 1 except that 5 parts of a phenol resin is used as a reinforcing resin in this example, 7 parts of a phenol resin is used as a reinforcing resin in example 1, and the rest is the same as example 1 and will not be specifically described.
Example 4 is substantially the same as example 1 except that the reinforcing resin in this example is 7 parts of a polyamide resin, and the reinforcing resin in example 1 is 7 parts of a phenol resin, and the rest is the same as example 1 and will not be specifically described.
Example 5
The preparation method of the alumina fiber cotton foaming grinding wheel comprises the following steps:
1) mixing and uniformly stirring 60 parts of polycarbonate polyol (Dazhi science 2202), 8 parts of epoxy resin (south Asia E51), 1 part of water, 0.4 part of organic metal salt catalyst (My picture SUL-4), 7 parts of talcum powder and 1 part of cationic surfactant (Tween 20) to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
2) adding 30 parts of dicyclohexylmethane diisocyanate into a charging basket of a foaming machine B, and adding dicyclohexylmethane diisocyanate;
3) cutting the alumina fiber cotton into strips with the length of 700mm and the width of 14 mm;
4) splicing the strips into the shape of the grinding wheel, putting the grinding wheel into a foaming mould, simultaneously spraying the sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mould for vacuumizing and glue injection, and placing the grinding wheel at normal temperature for foaming and forming to obtain the alumina fiber cotton foaming grinding wheel.
Example 6
The preparation method of the alumina fiber cotton foaming grinding wheel comprises the following steps:
1) mixing and uniformly stirring 70 parts of polyester polyol (Shandong Liang LA-E2), 10 parts of epoxy resin (south Asia E51), 1.5 parts of water, 0.2 part of organophosphorus catalyst, 5 parts of titanium dioxide and 1 part of nonionic surfactant (Tween 20) to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
2) adding 50 parts of HDI polymer polyisocyanate into a material barrel B of a foaming machine;
3) cutting the alumina fiber cotton into strips with the length of 800mm and the width of 16 mm;
4) splicing the strips into the shape of the grinding wheel, putting the grinding wheel into a foaming mould, simultaneously spraying the sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mould for vacuumizing and glue injection, and placing the grinding wheel at normal temperature for foaming and forming to obtain the alumina fiber cotton foaming grinding wheel.
Comparative example 1
This comparative example is essentially the same as example 1, except that: in the step (3) of this comparative example, a nonwoven fabric was cut into long strips having a length of 600mm and a width of 12 mm; in the step (3) of example 1, alumina fiber cotton was cut into long pieces having a length of 600mm and a width of 12 mm. The rest is the same as example 1, and is not specifically described here.
Comparative example 2
This comparative example is essentially the same as example 1, except that: the comparative example contained no reinforcing resin phenolic resin, whereas example 1 used a reinforcing resin phenolic resin. The rest is the same as example 1, and is not specifically described here.
The performance of the foamed abrasive wheels obtained in examples 1 to 6 and comparative examples 1 to 2 was measured, and the results are shown in Table 1.
The test items and the test instruments are as follows:
compressive strength: a universal mechanical testing machine.
Hardness: shore hardness C needle.
Roughness: roughness tester.
The hole plugging performance is as follows: single brush grinder, 1.2mm thick microporous resin plate.
TABLE 1 foam grinding wheel Performance test results
| Test group | Compressive strength | Shore hardness C | roughness/Ra/um | Condition of hole plugging |
| Example 1 | 25Mpa | 55 | 0.1 | Without plugging hole |
| Example 2 | 31Mpa | 63 | 0.16 | Without plugging hole |
| Example 3 | 21Mpa | 50 | 0.12 | Without plugging hole |
| Example 4 | 19Mpa | 50 | 0.12 | Without plugging hole |
| Example 5 | 22Mpa | 61 | 0.15 | Without plugging hole |
| Example 6 | 18Mpa | 50 | 0.11 | Without plugging hole |
| Comparative example 1 | 18Mpa | 58 | 0.24 | Plug hole |
| Comparative example 2 | 8Mpa | 40 | 0.2 | Plug hole |
As can be seen from Table 1, in examples 1 to 3, the hardness gradually decreased with the decrease in the content of the phenolic resin, showing no pores, but when the content of the phenolic resin was 7 parts, the Ra value was the lowest, and the polishing effect was the best, because the content of the phenolic resin was large, the crosslinking strength increased, the hardness increased, the adhesiveness of the whole grinding wheel was poor, and the synchronous releasability decreased, leading to an increase in the roughness; when the content of the phenolic resin is small, the strength of the grinding wheel is reduced, the dropping property is good, and the grinding force is increased, resulting in an increase in roughness.
In comparison with example 4, in example 1, the phenolic resin is used as the reinforcing resin, and compared with the polyamide resin, the phenolic resin has a better coating effect on the alumina fiber when being combined with the alumina fiber, so that the compressive strength of the foam grinding wheel in example 1 is higher.
In comparative example 1, the foamed abrasive wheel produced by using the nonwoven fabric as the main material had poor strength and easily broken fibers, resulting in chipping and hole plugging.
In comparative example 2, no phenol resin was added, the adhesive strength was poor, the reinforcement of the phenol resin was lacking, and the alumina fibers were broken into lumps, resulting in pore-filling.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. The preparation method of the alumina fiber cotton foaming grinding wheel is characterized by comprising the following steps:
mixing and uniformly stirring 50-70 parts of polyol, 3-10 parts of reinforcing resin, 0.4-1.5 parts of water, 0.1-0.5 part of catalyst, 3-7 parts of filler and 0.1-2 parts of auxiliary agent to obtain a mixture, and adding the mixture into a material barrel A of a foaming machine;
adding 30-50 parts of polyisocyanate into a material barrel B of a foaming machine;
cutting the alumina fiber cotton into a plurality of strips, splicing the strips into a grinding wheel shape, fixing the grinding wheel shape in a foaming mold, spraying sizing materials in a charging basket of a foaming machine A and a charging basket of a foaming machine B to the foaming mold for vacuuming and glue injection, placing at normal temperature for foaming and molding, and obtaining the alumina fiber cotton foaming grinding wheel.
2. The method for preparing an alumina cellucotton foam grinding wheel according to claim 1, wherein the polyol is at least one selected from the group consisting of polyether polyol, polyester polyol and polyolefin polyol having a viscosity of 3000cps or less at 25 ℃.
3. The method for preparing an alumina cellucotton foam grinding wheel according to claim 1, wherein the reinforcing resin is at least one selected from phenolic resin, epoxy resin and polyamide resin with viscosity of 20000cps or less at 25 ℃.
4. The method for preparing an alumina cellucotton foam grinding wheel as claimed in claim 1, wherein the catalyst is at least one selected from tertiary amine, organic metal salt and organic phosphorus.
5. The method for preparing an alumina fiber cotton grinding wheel according to claim 1, wherein the polyisocyanate is at least one selected from the group consisting of aromatic polyisocyanate having a viscosity of 3000cps or less at 25 ℃, aliphatic polyisocyanate, and alicyclic polyisocyanate.
6. The method for preparing the alumina fiber cotton foamed grinding wheel according to claim 1, wherein the foaming mold comprises:
the tubular structure is of a hollow structure and is provided with an inlet and an outlet, the tubular structure comprises a first part, a second part and a third part, the second part is provided with a first end and a second end, the first end of the second part is communicated with the first part, the second end of the second part is communicated with the third part, the inlet is arranged in the first part, the outlet is arranged in the third part, the first part is provided with a gap along the side wall, and the gap has a folding state and an opening state;
the locking device locks the gap to enable the gap to be in a folded state, and releases the lock of the gap to enable the gap to be in an opened state.
7. The method for preparing an alumina fiber cotton foam grinding wheel according to claim 6, wherein the diameter of the second portion is gradually reduced along the direction from the first end to the second end.
8. The method for preparing an alumina cellucotton foaming grinding wheel according to claim 6, wherein the locking device comprises a locking member and a fixing pin, the locking member is annular and provided with an opening, one side of the opening is provided with a first locking hole, the other side of the opening is provided with a second locking hole, and the fixing pin passes through the first locking hole and the second locking hole and can lock and unlock the first locking hole and the second locking hole.
9. The method for preparing the alumina fiber cotton foam grinding wheel as claimed in claim 6, wherein the tubular structure comprises a shell and a first silica gel layer positioned on the inner wall of the shell.
10. An alumina fiber cotton foaming grinding wheel, which is characterized by being prepared by the method for preparing the alumina fiber cotton foaming grinding wheel according to any claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523927.5A CN112679786B (en) | 2020-12-21 | 2020-12-21 | Alumina fiber cotton foaming grinding wheel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523927.5A CN112679786B (en) | 2020-12-21 | 2020-12-21 | Alumina fiber cotton foaming grinding wheel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112679786A true CN112679786A (en) | 2021-04-20 |
| CN112679786B CN112679786B (en) | 2022-09-23 |
Family
ID=75450258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011523927.5A Active CN112679786B (en) | 2020-12-21 | 2020-12-21 | Alumina fiber cotton foaming grinding wheel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112679786B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079581A (en) * | 2023-02-22 | 2023-05-09 | 东莞市鼎泰鑫电子有限公司 | Laminated foaming non-woven fabric grinding wheel and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224970A (en) * | 1989-03-01 | 1993-07-06 | Sumitomo Chemical Co., Ltd. | Abrasive material |
| CN107116485A (en) * | 2017-06-07 | 2017-09-01 | 广州立启森科技有限公司 | A kind of manufacture method of expansion type porous grinding wheel |
| CN110052976A (en) * | 2019-04-18 | 2019-07-26 | 广州捷骏电子科技有限公司 | A kind of nonwoven fabric brush wheel and its processing method |
| CN111590477A (en) * | 2020-05-27 | 2020-08-28 | 广东伟艺抛磨材料有限公司 | Raw material for processing non-woven fabric polishing wheel and manufacturing method of non-woven fabric polishing wheel |
-
2020
- 2020-12-21 CN CN202011523927.5A patent/CN112679786B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224970A (en) * | 1989-03-01 | 1993-07-06 | Sumitomo Chemical Co., Ltd. | Abrasive material |
| CN107116485A (en) * | 2017-06-07 | 2017-09-01 | 广州立启森科技有限公司 | A kind of manufacture method of expansion type porous grinding wheel |
| CN110052976A (en) * | 2019-04-18 | 2019-07-26 | 广州捷骏电子科技有限公司 | A kind of nonwoven fabric brush wheel and its processing method |
| CN111590477A (en) * | 2020-05-27 | 2020-08-28 | 广东伟艺抛磨材料有限公司 | Raw material for processing non-woven fabric polishing wheel and manufacturing method of non-woven fabric polishing wheel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079581A (en) * | 2023-02-22 | 2023-05-09 | 东莞市鼎泰鑫电子有限公司 | Laminated foaming non-woven fabric grinding wheel and preparation method thereof |
| CN116079581B (en) * | 2023-02-22 | 2024-03-22 | 东莞市鼎泰鑫电子有限公司 | Laminated foaming non-woven fabric grinding wheel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112679786B (en) | 2022-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100464570B1 (en) | Method of fabricating polyurethane foam with micro pores and polishing pad therefrom | |
| TWI704976B (en) | Controlled-porosity method for forming polishing pad | |
| CN101966697B (en) | Manufacturing method of polishing pad | |
| CN112679786B (en) | Alumina fiber cotton foaming grinding wheel and preparation method thereof | |
| KR101186531B1 (en) | Polyurethane porous product and manufacturing method thereof and Polishing pad having Polyurethane porous product | |
| KR100418649B1 (en) | Urethane molded products for polishing pad and method for making same | |
| CN112300355B (en) | Two-component waterborne polyurethane, application thereof, polyurethane composite polishing pad formed by two-component waterborne polyurethane and preparation method | |
| JP2013507502A (en) | Method for producing nanoporous polyurethane coating | |
| KR20170001627A (en) | Method of making composite polishing layer for chemical mechanical polishing pad | |
| US10105825B2 (en) | Method of making polishing layer for chemical mechanical polishing pad | |
| CN103764346A (en) | Polishing pad | |
| US10144115B2 (en) | Method of making polishing layer for chemical mechanical polishing pad | |
| TWI551396B (en) | Polishing pad and method for making the same | |
| KR20170018359A (en) | Centrifugal casting of polymer polish pads | |
| TWI692494B (en) | Chemical mechanical polishing pad and method of making same | |
| US8071175B2 (en) | Method of fabricating a foam play article | |
| KR101701152B1 (en) | Polishing pad comprising nano fiber with protrusion | |
| JP6444507B2 (en) | Polishing pad manufacturing method | |
| TW201823320A (en) | Airless atomizing methods for making chemical mechanical planarization (cmp) polishing pads | |
| CN111101220A (en) | Sand-impregnated vinylon and method for preparing sand-impregnated vinylon by dry spinning | |
| KR102625874B1 (en) | Polishing pad and preparation method thereof | |
| CN115558283B (en) | Polyurethane sponge for mop and preparation method thereof | |
| KR102421888B1 (en) | Polishing pad, manufacturing method thereof and preparing method of semiconductor device using the same | |
| KR102277418B1 (en) | Polishing pad with improved crosslinking density and preparation method thereof | |
| CN117506754A (en) | Polyurethane elastic grinding wheel with honeycomb structure and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |